"Animals and Their Tools"

Front

captivity

Back

the state of being kept by humans; not allowed to live freely

Front

flexible

Back

able to bend

Front

intelligent

Back

able to learn, think, and understand

Front

invertebrate

Back

an animal with no bones

Front

survival

Back

the ability to stay alive

Front

threatened

Back

in danger

Front

tool

Back

an object that helps a person or animal perform a task